{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T11:30:04Z","timestamp":1775043004937,"version":"3.50.1"},"reference-count":34,"publisher":"Oxford University Press (OUP)","issue":"9","license":[{"start":{"date-parts":[[2006,5,1]],"date-time":"2006-05-01T00:00:00Z","timestamp":1146441600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2006,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Rationale<\/jats:title>\n                    <jats:p>The development of tuberculin skin test (TST) positivity following infection by Mycobacterium tuberculosis is not invariable and may depend on bacillary as well as host factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>First, to compare the diagnostic performance of the TST and a form of in vitro IFN-\u03b3 release assay (IFNGRA) in the circumstances of a contact investigation prompted by an unusually severe index case of infectious pulmonary tuberculosis. Second, to investigate the ability of the strain of M. tuberculosis responsible to induce cytokine secretion from monocytes in vitro.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A routine TST-based tuberculosis-contact screening procedure supplemented by the use of an \u201cin house\u201d IFNGRA that assays the T-cell response to the M. tuberculosis\u2013specific antigens ESAT-6, CFP-10 (presented as a fusion protein within the inactivated adenylate cyclase of Bordetella pertussis), and purified protein derivative of M. tuberculosis. Isolation and genetic typing of the strain of M. tuberculosis responsible, and investigation of its ability to induce cytokine secretion from monocytes in vitro.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Measurements and Main Results<\/jats:title>\n                    <jats:p>TST screening suggested a low rate of transmission with just 2\/75 unequivocally positive responses. By contrast, the IFNGRA suggested an infection rate of 16\/75 (22%). When compared with two reference strains of M. tuberculosis (H37Rv and CDC1551), the outbreak strain induced lower levels of tumor necrosis factor-\u03b1 and interleukin-12p40 (p &amp;lt; 0.04), cytokines associated with the development of delayed-type hypersensitivity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>These data suggest that infection by M. tuberculosis can be undetected by TST, and that this may partially relate to strain differences in immunogenicity.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1164\/rccm.200509-1526oc","type":"journal-article","created":{"date-parts":[[2006,2,2]],"date-time":"2006-02-02T21:09:19Z","timestamp":1138914559000},"page":"1038-1042","source":"Crossref","is-referenced-by-count":25,"title":["Transmission of\n                    <i>Mycobacterium tuberculosis<\/i>\n                    Undetected by Tuberculin Skin Testing"],"prefix":"10.1093","volume":"173","author":[{"given":"Suzanne T.","family":"Anderson","sequence":"first","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda J.","family":"Williams","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jillian R.","family":"Brown","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandra M.","family":"Newton","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcela","family":"Simsova","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark P.","family":"Nicol","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; Tuberculosis Clinic, North West London Hospitals NHS Trust, Northwick Park Hospital, Harrow, United Kingdom; Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic; and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Rondebosch, South Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Sebo","sequence":"additional","affiliation":[{"name":"Wellcome Trust Centre for Research in Clinical Tropical Medicine; Department of Pediatrics, Division of Medicine, Wright Fleming Institute, Imperial College London, London; 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